Automatic weighing and bagging machine.



No. 797,764- PATENTED AUG. 22, 1905. R. D. WEBB.

AUTOMATIC WBIGHING AND BAGGING MACHINE. LPPLIOATIOI FILED 1:20.31. 1904.

N w R S T a: "i i I a g I Q/vibvwom UNITED STATES ROBERT D. WEBB, OF MINDEN, LOUISIANA.

AUTOMATIC WEIGHING AND BAGGING MACHINE.

Specification of Letters Patent.

Patented Aug. 22, 1905.

Application filed December 31, 1904. Serial No. 239,253.

To all whom, it may concern.-

Be it known that 1, ROBERT D. WEBB, a citizen of the United States, residing at Minden, in the parish of Webster, in the State of Louisiana, have invented certain new and useful Improvements in Automatic Weighing and Bagging Machines, of which the following is a specification.

My invention relates to automatic weighing-machines, and has for its objects to facilitate their operations and simplify their constructions; and to this end my invention consists of a machine in which a single chute having a valve at its mouth is combined with two scales of suitable character, as fully set forth hereinafter, and as illustrated in the accompanying drawings, in which Figure 1 is a side view of my improved Weighing-machine; Fig. 2, a detached view of the valve.

Two scales B B, of any suitable construction, are supported by a frame C below a chute A, and each scale is provided with a receptacle m m, the two receptacles being in different positions below the mouth of the chute.

WVithin the chute at its mouth is arranged a valve D, pivoted to or carried by a shaft f, which is centrally arranged between two valvefaces 3/ 1 which diverge, being, as shown, at about right angles to each other, so that the grain or other material descending through the chute and impacting or bearing on said faces will exert about an equal pressure on opposite sides of the pivotal point, whereby the valve is practically balanced in any position that it may take. The said valve only partially closes the mouth of the chute, so that there is an opening between one face of the same and the side of the chute above one of the receptacles When the valve is in one position, while the other face closes against the opposite side of the mouth of the chute and when the valve is in the other position the opening is above the other receptacle, whereby the shifting of the valve to its different positions will serve to direct the flow of material successively to the different receptacles or to receptacles successively placed upon the different scales.

In the construction shown the scale-beams Z support suitable weights, which may be adjusted so as to prevent the beams from tilting until the desired amount of material is in the receptacle, and each beam is connected by a rod 0 With an arm q upon a rock-shaft e, and said arm 9 is connected by a rod 9* with an. arm

9 on the shaft f of the valve. It will be seen that the arm q and connecting-rod r at each side of the apparatus constitute together a toggle arrangement, and these parts are so proportioned that when one of the receptacles is in its lowest position, as shown at the right, Fig. 1, the arm and connecting-rod on the opposite (left) side will be in line with each other and will lock the valve, so that it cannot be displaced in mani iiulating the loaded receptacle or while putting another empty one back on this tilted beam.

In operation when one receptacle is filled the scale-beam on that side is tilted, thus elevating the outer ends of arms q and 1* through means of the arm 0, and while these arms are being elevated at their outer ends on this side the corresponding arms are being lowered at their outer ends on the other side by the action of the weight 6 through the arm 0, permitting the outer end of the scale-beam on this side to descend. The arms rand q while descending are forming a toggle with greatlyincreasing power, so that the weight 0 on this side quickly and effectively shifts the valve D until the descending arms and q finally come into horizontal alinement, thus locking the valve D against any movement from the tilted scale-beam on the other side while takingofi' the filled receptacle and putting on an empty one. It will be seen that arms 0 and q are not allowed to come in line, so that the weights will have immediate leverage in beginning to shift the valve as soon as the scalebeam on the other side begins to tilt. In construction any or all of the pivotal points of these arms and connecting-rods can be made ball-bearing or in any suitable way to limit friction and get the best results. The rods 0' may be slotted a little at 10, if found necessary, to give slight play to the tilting beam at the beginning of its upward stroke.

Without limiting myself to the precise construction and arrangement of parts shown I claim 1. In an automatic weighingmachine, a chute, two scales with supports for receptacles both below the end of the chute, a valve having two faces at an angle to each other, pivoted within the mouth of the chute to partially close the same, and connections whereby the valve is shifted on the descent of either receptacle, to close the mouth of the chute above said receptacle, substantially as set forth.

2. The combination in an automatic weighing-machine, of two scales, a receptacle carried by each, a chute, the mouth of which is above both receptacles, a valve having two faces at an angle to each other and pivoted between said faces in said mouth, and means to shift the same to close the said mouth alternately above the different receptacles, substantially as set forth.

3. The combination with the two scales, receptacles carried thereby, land a chute, of a valve having diverging faces, centrally pivoted in said chute to partially close the mouth of the same, and means to shift the valve to direct the flow from the chute alternately to the different receptacles, substantially as set forth.

4. The combination of the chute, a valve with diverging faces, pivoted between said faces within the mouth of the chute, two scales carrying receptacles in different positions below the mouth of the chute, and connections between both scales and the valve whereby to shift the same on the descent of either receptacle to close that part of the mouth of the chute above said receptacle, substantially as set forth.

5. The combination with the chute of an automatic weighing-machine, of a valve having diverging faces, and partially closing the mouth of said chute, and pivoted between said faces to be balanced by the pressure on opposite sides of the pivot, substantially as set forth.

6. The combination with the chute of an automatic weighing-machine, of a valve having diverging faces,and pivoted between said faces to be balanced by the pressure of the material on the opposite faces of the valve, substantially as set forth.

7. The combination of the chute, valve with diverging faces pivoted to partially close the chute at its mouth, two scale-beams, receptacles supported by said beams in difierent positions below said month, an arm connected with the valve, rods connected with said arm, and toggle connections between each rod and one of the scale-beams arranged to lock the valve in position when either receptacle is in its lowest position, substantially as set forth.

8. The combination of the chute, valve having diverging faces pivoted centrally to partially close the chute at its mouth, two scalebeams, receptacles supported by said beams in different positions below said mouth, an arm connected with the valve, rods connected with said arm, and toggle connections between each rod and one of the scale-beams arranged to secure an increasing leverage through the weights on the descending scale-beam to positively'and quickly move the valve as either receptacle assumes its lowest position, substantially as set forth.

9. The combination in an automatic weighing-machine, of a chute and a balanced valve with diverging faces pivoted in the mouth of the same, two scale-beams, and connections between the valve and scale-beams to shift the valve alternately with the tilting of the beams, substantially as set forth.

10. The combination in an automatic weighing-machine, of two scale-beams, and receptacles, and a valve having diverging faces and toggle connections with the scale-bcan'is so that the toggles on the sides where the scale-beam is down come in line and lock the valve so as to effectively prevent its motion or disturbing the movement of the scale-beam on this side until the receptacle is properly filled with the required amount of material being weighed and the beam is thereby tilted, substantially as set forth.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

ROBT. D. l VEBB. Witnesses:

N. R. Gnicsnv, PIERCE Unuws. 

